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find the methylmercury CH3Hg concentration in fish at which regular consuption at 50g/day becomes unacceptable health risk. use epa reference dose for methylmercury of 0.0001mg/kg-day. b) if the bioaccumulation factor of methylmercury in tuna is 10^9 ehat would you consider the maximum safe concentration of methylmercury in ocean water in M?
How many milliliters of a 9.0 M H2SO4 solution are needed to make 0.25 L of a 3.5 M H2SO4 solution?
What is the rate of entropy generation within the tank? 3.) If we duplicated the stream conditions (temperatures, pressures, and flowrates) with an internally reversible process, what is the maximum rate at which work could be obtained?
Calculate the radius of iridium (Ir) atom given that Ir has FCC crystal structure, a density of 22.4 g/cm³ and atomic weight of 192.2 g/mol
An empty 2.0 L soda bottle is tightly capped at 25 degrees C and 732 mmHg. If the bottle is heated to 100 degrees C what is the pressure in the bottle
If carbon dioxide gas is collected over water at 25°C and 775 torr, what is the partial pressure of the CO2? The vapor pressure of water is 23.8 torr at 25°C.
calculate the number of excess reagent units remaining when 41 C2H4 molecules and 102 O2 molecules react?
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 82% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9*10-12.]
An experiment requires 45.8 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder.
How much energy (kJ) is required to convert a 25.0 g ice cube at -15.0oC to water vapor at 250oC?
Consider the following cell: Pt|H2(g, 0.645 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.20 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V.
How much helium gas would it take to ?ll a gas balloon with a volume of 1020 cm 3 when the temperature is 39.0? C and the atmospheric pressure is 724 mm Hg? Answer in units of mol.
What volume of 3.50M H2S is required to react with excess O2 to produce enough NH3 to fill a cylinder that is 50ft long and has a diameter of 13 ft at a pressure of 450 torr and 20?F?
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